Invention Grant
US08264982B2 Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
有权
用于形成时分双工多输入多输出下行链路波束的方法，装置和系统
- Patent Title: Method, apparatus and system for forming time division duplex multi-input multi-output downlink beams
- Patent Title (中): 用于形成时分双工多输入多输出下行链路波束的方法，装置和系统
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Application No.: US12825099Application Date: 2010-06-28
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Publication No.: US08264982B2Publication Date: 2012-09-11
- Inventor: Luxi Yang , Daofeng Xu , Yinggang Du
- Applicant: Luxi Yang , Daofeng Xu , Yinggang Du
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Slater & Matsil, L.L.P.
- Priority: CN200710306382 20071228
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04W24/00 ; H04L5/14
Abstract:
In a method for forming TDD MIMO downlink beams, a BS receives an index of a codebook element from a mobile terminal. The codebook element refers to a codebook element whose correlation value has a greatest modulus value among correlation values that are calculated by the mobile terminal and are about correlation between the codebook element and a channel corresponding to a non-transmitting antenna of the mobile terminal. The BS calculates a channel vector corresponding to the non-transmitting antenna of the mobile terminal. The BS calculates channel vectors of the transmitting antennas of the mobile terminal, and performs SVD to determine a best transmitting precoding matrix.
Public/Granted literature
- US20100265843A1 Method, Apparatus and System for Forming Time Division Duplex Multi-Input Multi-Output Downlink Beams Public/Granted day:2010-10-21
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